CVE-2026-34964
Adminer before 5.5.0 SSRF via PDO DSN Injection
CVSS Score
5.8
EPSS Score
0.0%
EPSS Percentile
0th
Adminer before 5.5.0 contains a server-side request forgery vulnerability in the login form's server field validator, which only inspects leading integers for privileged ports and fails to reject non-numeric port values. Attackers can inject PDO DSN keys like host= and port= into the server parameter to bypass the privileged-port restriction and establish TCP connections to arbitrary internal hosts and ports before authentication.
| CWE | CWE-918 |
| Vendor | vrana |
| Product | adminer |
| Published | Aug 25, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
vrana / adminer
0 < 5.5.0
References
Credits
🔍 Infinit3i